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A297700
Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 4 neighboring 1s.
1
128, 747, 32173, 358972, 10084740, 150761147, 3487451085, 59854521809, 1263544138037, 23153469283080, 468020809803575, 8846294320139442, 175169339607743899, 3359920008363870018, 65882834491610105219
OFFSET
1,1
COMMENTS
Row 7 of A297694.
LINKS
EXAMPLE
Some solutions for n=3
..0..1..0. .0..0..0. .0..0..0. .1..0..1. .1..0..1. .0..1..0. .1..1..1
..0..0..0. .0..1..0. .0..0..0. .1..0..0. .0..0..0. .1..0..1. .0..1..0
..1..0..0. .0..1..0. .1..0..1. .1..0..0. .1..1..1. .1..1..1. .0..1..0
..0..0..0. .1..0..1. .1..0..0. .0..0..0. .1..1..1. .0..1..0. .0..0..0
..0..1..0. .0..1..0. .0..0..0. .0..0..0. .0..0..0. .0..0..0. .0..0..1
..0..0..0. .0..1..0. .0..0..1. .1..0..0. .0..0..0. .0..1..1. .0..0..1
..0..1..0. .0..1..0. .1..0..0. .0..0..1. .0..0..0. .1..1..0. .1..0..1
CROSSREFS
Cf. A297694.
Sequence in context: A349110 A366827 A297463 * A218070 A188151 A372094
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 03 2018
STATUS
approved